Merge branch 'determine-desired-sharding-key-feature-category-feature_flags' into 'master'

Add desired sharding keys for feature_flags

See merge request https://gitlab.com/gitlab-org/gitlab/-/merge_requests/144475



Merged-by: Gregory Havenga <11164960-ghavenga@users.noreply.gitlab.com>
Approved-by: Gregory Havenga <11164960-ghavenga@users.noreply.gitlab.com>
Approved-by: Pam Artiaga <partiaga@gitlab.com>
Co-authored-by: Manoj M J <mmj@gitlab.com>

db/docs/operations_feature_flags_issues.yml

@@ -7,4 +7,19 @@ feature_categories:
 description: https://docs.gitlab.com/ee/operations/feature_flags.html#feature-flag-related-issues
 introduced_by_url: https://gitlab.com/gitlab-org/gitlab/-/merge_requests/32876
 milestone: '13.1'
-gitlab_schema: gitlab_main
+gitlab_schema: gitlab_main_cell
+allow_cross_joins:
+- gitlab_main_clusterwide
+allow_cross_transactions:
+- gitlab_main_clusterwide
+allow_cross_foreign_keys:
+- gitlab_main_clusterwide
+desired_sharding_key:
+  project_id:
+    references: projects
+    backfill_via:
+      parent:
+        foreign_key: feature_flag_id
+        table: operations_feature_flags
+        sharding_key: project_id
+        belongs_to: feature_flag

db/docs/operations_strategies.yml

@@ -7,4 +7,19 @@ feature_categories:
 description: https://docs.gitlab.com/ee/operations/feature_flags.html#feature-flag-strategies
 introduced_by_url: https://gitlab.com/gitlab-org/gitlab/-/merge_requests/24819
 milestone: '12.8'
-gitlab_schema: gitlab_main
+gitlab_schema: gitlab_main_cell
+allow_cross_joins:
+- gitlab_main_clusterwide
+allow_cross_transactions:
+- gitlab_main_clusterwide
+allow_cross_foreign_keys:
+- gitlab_main_clusterwide
+desired_sharding_key:
+  project_id:
+    references: projects
+    backfill_via:
+      parent:
+        foreign_key: feature_flag_id
+        table: operations_feature_flags
+        sharding_key: project_id
+        belongs_to: feature_flag

db/docs/operations_strategies_user_lists.yml

@@ -7,4 +7,19 @@ feature_categories:
 description: https://docs.gitlab.com/ee/operations/feature_flags.html#user-list
 introduced_by_url: https://gitlab.com/gitlab-org/gitlab/-/merge_requests/30243
 milestone: '13.0'
-gitlab_schema: gitlab_main
+gitlab_schema: gitlab_main_cell
+allow_cross_joins:
+- gitlab_main_clusterwide
+allow_cross_transactions:
+- gitlab_main_clusterwide
+allow_cross_foreign_keys:
+- gitlab_main_clusterwide
+desired_sharding_key:
+  project_id:
+    references: projects
+    backfill_via:
+      parent:
+        foreign_key: user_list_id
+        table: operations_user_lists
+        sharding_key: project_id
+        belongs_to: user_list